The Reds were left short at left back after Jose Enrique sustained an injury, pushing right backs Jon Flanagan and Glen Johnson into roles outside of their comfort zones, with both defenders preferring to play on the right hand side. Loanee Aly Cissokho failed to impress and will return to Valencia, meaning manager Brendan Rodgers must look to sign a left back.
Sevilla's Alberto Moreno was long tipped to be arriving for £20m, but the deal has stalled to the point where many believe that he won't be signing. Wolfsburg's Ricardo Rodriguez was recently linked after impressing for Switzerland at the World Cup, but the primary target was reportedly another World Cup defender - Argentina's Rojo.
The Sporting Lisbon centre back is currently playing at left back for Alejandro Sabella's men, and his versatility could prove to be very appealing to Rodgers. A £12m move had been mooted earlier this week, but their hopes of landing the 24-year-old have taken something of a hit after he was linked with Barcelona - and Rojo admitted his desire to play domestically with Argentina team mate Lionel Messi.
"I don't know anything, I'm relaxed about it, I'm focused on the World Cup," said Rojo. "Of course I'd like to play [with Messi], but to tell the truth, I haven't spoken to Leo about it. I just know that I've performed well in the last year. We will see what happens after the World Cup,"
The news is a big blow to Liverpool, who can't seem to land a left back at the moment after the hold up in the Moreno deal. The lure of playing alongside Messi is likely too much for Rojo to turn down in favour of Anfield, but there has to be concrete interest from the Catalan giants for that to even be possible.
Additionally, Rojo's versatility could be cause for Barcelona to see him as a depth option with Jordi Alba already established at left back and bigger names targeted in the centre. Liverpool haven't lost all hope in their pursuit of Rojo, but it's hardly encouraging either.